Question about 1979 Harley Davidson XLH 1000 Sportster

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Why do i have to prime my oil pump after every oil change?otherwise no oil pressure..79 ironhead...

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You shouldn't be having to prime the oil pump with every oil change. If you're running the original oil tank in it's original position, when you drain the tank by removing the plug at the bottom of it, the oil line from the bottom of the tank going to the oil pump is still full of oil. As long a you're not doing something to drain that line, you should not have to prime the pump. It sounds like to me that you're removing the oil feed line to the pump in order to drain the tank. If you're doing it this way, you will have to prime the pump every time. Drain the oil from the oil tank by removing the drain plug from the tank.

Good Luck

Posted on Aug 05, 2010


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1 Answer

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that grease trick helps.
is this some china pump off fleabay or a real jeep pump..???
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maybe the new pumps relieve valve is stuck open, fully.
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one of the top brand pump makers. VIDEO

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